fixed new production config using wrong port/ip for heroku

Author: DaftMonk

templates/express/config/env/production.js

@@ -3,13 +3,15 @@
 module.exports = {
   env: 'production',
   ip:   process.env.OPENSHIFT_NODEJS_IP ||
-        '127.0.0.1',
+        process.env.IP ||
+        '0.0.0.0',
   port: process.env.OPENSHIFT_NODEJS_PORT ||
+        process.env.PORT ||
         8080<% if (mongo) { %>,
   mongo: {
     uri: process.env.MONGOLAB_URI ||
          process.env.MONGOHQ_URL ||
          process.env.OPENSHIFT_MONGODB_DB_URL+process.env.OPENSHIFT_APP_NAME ||
          'mongodb://localhost/fullstack'
   }<% } %>
-};
+};